Aluminium alloy



Patented May 3, 1938 I it I UNITED STATESPATENT OFFICE ALUMINIUM ALLoY.

Yonosuke -Matuenaga, Naka-ku, Yokohama, Japan .No Drawing. Original application May 8, 1936,

Serial No. 78,723. Divided and this. application November 12, 1936, Serial No. 110,553. In Japan May 13, 1935 1 Claim. '(Gl. 75-146) This application is a divisional from appli- It is acknowledged from repeated experiments cants copending application Serial No. 78,723, that addition of a few percentage'of cobalt; mofiled May 3, 193 lybdenum, vanadium, tungsten, titanium, lithium.-

This invention relates to an.aluminium alloy or beryllium does not appreciably modify the containing main and auxiliary elements, the properties of the alloy so that alloys containing 5 ai l t consisting of 2 t 5% magnesium, one or more of the above elements are considered 6 to 14% -zinc, 0.2 to 2.0% nickel, 0.01 to 1.5% equivalent'alloys to each Other'. iron, 0.1 to 1.0% silicon and the rest substantially As m be e from the above example, the new aluminium keeping the condition that the conalloy has a f great tensile strength. and F tent of silicon is always greater than that of iron, great 3 9? which are hardly obtainable m '10 while the auxiliary elements consisting of a metal known alumlmum p selected from the group of 0.1 to 1.5% man- As to i q actlon of elements of the ganese, a few percentage of cobalt, molybdenum, new P It supposefd as f w? A part of vanadium, tungsten, titanium lithium and berylmagnesium combme wlth smegmto form 15 lium The object of the invention is to obtain an magnesmm slhclde and another part of magnesium may be alloyed with a part of zinc and alumimum alloy whlchhas a tenslle. a part of aluminium to form various three ele- Strength and great elongation especially when mental alloys of difierent percentage Further subjected under heat treatment nickel may be alloyed with iron. These chemical Example of th oy Showing Percentages of compounds and alloys may crystal out in the the elements employed and also tensile strength ain element, viz., aluminium and may be uniand elongation when the, alloys are subjected formly distributed therein. Further, when manunder a mode of tempering-and annealing is ganeseis employed, this manganese not only acts given as follows: as reducing agent, but also hinders the growth of particles of zinc-manganese-aluminiun:i alloys Example "7-- I% 11% and also of nickel-iron alloy so that the dis- M 2.5 2.5 tribution of the alloy may be promoted. Z11 9.0 9.0 what I'claim is:- N 0.5 1.0 An aluminium alloy containing 2 to 5% mag- F 0.2 0.2 nesium, 6 to 14% zinc, 0.2 to 2% nickel, 0.0l to Si 0.6 0.6 1.5% iron, .1 to 1% silicon, the silicon content M v 0.8 0.8 being always greater than the iron content, .1 to A1 Rest Rest 1.5% manganese and the rest aluminium. Tensile strength l:g./cm. 58.5 60.3 Elonzatlon 15 12 YONOSUKE MATUENAGA. 

